121461817 has 2 divisors, whose sum is σ = 121461818. Its totient is φ = 121461816.

The previous prime is 121461793. The next prime is 121461859. The reversal of 121461817 is 718164121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 121352256 + 109561 = 11016^2 + 331^2 .

It is a cyclic number.

It is not a de Polignac number, because 121461817 - 2¹¹ = 121459769 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (121461217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60730908 + 60730909.

It is an arithmetic number, because the mean of its divisors is an integer number (60730909).

Almost surely, 2^121461817 is an apocalyptic number.

It is an amenable number.

121461817 is a deficient number, since it is larger than the sum of its proper divisors (1).

121461817 is an equidigital number, since it uses as much as digits as its factorization.

121461817 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2688, while the sum is 31.

The square root of 121461817 is about 11020.9716903729. The cubic root of 121461817 is about 495.2371981582.

The spelling of 121461817 in words is "one hundred twenty-one million, four hundred sixty-one thousand, eight hundred seventeen".